Suggest a reasonable explanation for each of the following observations:

(a) the second-order rate constant k for saponification (basic hydrolysis) of ethyl trifluoroacetate is over 1 million times greater than that for ethyl acetate (25°c).
(b) the second-order rate constant for saponification of ethyl 2,2-dimethylpropanoate, (ch3)3cco2ch2ch3, is almost 100 times smaller than that for ethyl acetate (30°c).
(c) the second-order rate constant k for saponification of methyl acetate is 100 times greater than that for tert-butyl acetate (25°c).
(d) the second-order rate constant k for saponification of methyl m-nitrobenzoate is 40 times greater than that for methyl benzoate (25°c).

1. an experiment in your science class lists the materials needed for the lab. it is your job, as a lab partner, to measure out 25 ml of distilled water and 2.5 grams of magnesium. what lab measuring tools would you choose to measure each substance and how would you use each tool to get the correct amounts? be sure to describe the process you would follow step-by-step. (5 points) 2.which of the following is an si base unit for measuring mass? (2 points) ampere gram meter pound 3.which of the following is an si base unit for time? (2 points) decades hours minutes seconds 4.which of the following tools should a scientist use to measure an object in milligrams? (2 points) graduated cylinder pan balance tape measure thermometer 4.which of the following tools should a scientist use to measure an object in milligrams? (2 points) graduated cylinder pan balance tape measure thermometer. 5.a pencil beside a metric ruler. the ruler is scaled from 1 centimeter to 10 centimeters, with markings for millimeters between each number. one end of the pencil is beside the 0 on the ruler, and the pencil point is beside the 5. which of the following measurements is accurate but not precise? (2 points) 5 mm 5 cm 50 mm 50 cm 6. which of the following prefixes represents the largest value? (2 points) giga hector kilo milli 7. which of the following types of graphs is best for plotting the percentages of a whole value in a data set? (2 points) bar graph circle graph histogram line graph

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next

Type the correct answer in each box.balance the chemical equation.__ n203 ➡️ __ n2 +__ o2